ackerman



UNITED STATES PATENT oEEroE.

J. S. HALSTED AND J. ACKERMAN, OF NEV YORK, N. Y.

CARPENTERS MITER .AND BEVEL SQUARE.

Specification of Letters Patent No. 13,127, dated June 26, 1855.

To all whom it may concern:

Be it known t-hat we, J. S. HALSTED and C. J. ACKERMAN, of the city,county, and State of New York, have invented a new and useful Implementor Tool for Carpenters and Jointers, said implement to be used forforming the joints of window and door casings and work of a similarnature; and.

we do hereby declare that the following is a full, clear, and exactdescription of the same, reference being had to the annexed drawings,making a part of this specification, in which- Y I Figure 1, is a viewof one of the joints of a window or door casing. Figs. 2 and 3 are viewsof the ends of the top or head piece and side piece, with the implementor tool applied to them showing its use. Fig. 4, is a transverse sectioneither of the top or side piece with the implement or tool applied toit.

Similar letters of reference indicate corresponding parts in the severaligures.

This invention relates to a new and usei'ul implement or tool forforming the oints of window and door` casings and work of a similarnature which now require the use of several tools, such as the'square,bevel, trying square, etc.

The nature of the invention consists in the peculiar construct-ion ofthe implement as will be presently shown and described, whereby thejoints may be laid out or 4 marked in an accurate and expeditiousmanner.

A, Figs. 2, 3 and 4 represents the handle of the implement, and B,represents the blade. The handle may be made of 'metal having forconvenience a slot (a) made in it for the fingers to pass through. Theblade may be made of steel similar to those of the ordinary tryingsquares, and the blade is attached to the handle at right angles with itin the same manner as a trying square. The inner edge of the handle A,is provided with a ledge or anch (b) which projects outward beyond eachside of the handle as shown in Fig. 4, and both ends of the handle iscut or beveled at an angle of 45o as shown in Figs, 2 and 3. The lowerend of the upper bevel is in line with the lower edge of the blade B.

In the outer edge of the handle A, there is a slot in which a steelblade C, is fitted. The upper end of this blade is attached to the upperpart of the handle A, by a screw (c) so that the blade may be moved inand out from the handle and set in line with the bevel at the upper endof the handle, or, at an angle of 45 as shown in Fig. 3.

The implement or tool thus constructed is used in the following manner.D, Figs. 1 and 2, represents one of the side pieces or Stiles of awindow or door frame, and E, Figs. 1 and 3 represents the head or toppiece of the frame. These pieces are made more or less ornamental in allcases, the inner edges of the pieces having beads or moldings formed onthem, as represented by (d) and in expensive houses carved work is used.The pieces are also formed with recesses or grooves on their face sidesarranged in various ways. The joints of the frames are never formed by asimple miter as the least shrinkage of the frame would show very plainlyopening the joints and leaving an unsightly space. A zig zag joint isformed as indicated in red Fig. 1.

In order to lay out or mark the oint the ends of the pieces are firstsquared. The side pieces or stiles D, are marked or laid out by gettingthe point (e) on the molding (el) by actual measurement, the lanch orledge (b) on the inner edge of the handle A is then fitted in the grooveor kerf formed by the bead or molding (d),

and the handle is moved till t-he point (e) touches the upper edge ofthe handle see Fig. 2. The two lines (f) (g) are then drawn, (f) being amiter or an angular line of 45, and the line (g) a horizontal one. Thevertical line (It) is obtained without marking as it is on the shoulderof a recess in the face of the stile. Thus by a single application ofthe implement the side pieces or stiles are marked.

The head pieces E, are marked or laid out as Shown in Fig. 8, the point(e) being obtained the inner edge of the handle is placed against theshoulder (2') of the recess, and the blade C, is adjusted in line withthe bevel at the upper end of the handle A, and the implement is movedtill the point (e) touches the upper edge oi the blade C, the miter line(j) across the head or molding, and a point (la), on the shoulder (i),is thereby obtained, and by reversing the implement the line (Z),obtained at right angles with the shoulder The ends when cut accordingto the lines above fianch projecting on each side of the inner edge ofthe handle A, the upper and lovver ends of said handle being cut orbeveled at an angle of 45o, the handle being provided with a blade B,Which is attached at right angles to it, and also provided with anadjustable blade C, as herein shown, and for the purpose as set fort-h.

J ONAS S. HALSTED. CORNELIUS J. ACKERMAN. Witnesses:

Jos. Gino. MASON, JOHN MASON.

